import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main2 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        int[] a = new int[n];
        int max = 0;
        for(int i = 0; i < n; i++) {
            a[i] = in.nextInt();
            max = Math.max(max, a[i]);
        }

        boolean flag = true;
        for(int i = 0; i < n; i++) {
            int tmp = a[i];
            while(tmp < max) {
                tmp *= 2;
            }
            if(tmp != max) {
                flag = false;
                break;
            }
        }

        if(flag) {
            System.out.println("YES");
        } else {
            System.out.println("NO");
        }
    }
}